Hello had this one in today just as i was leaving, did a quick scan and retrieved some codes of which 2 were relating to the coolant temperature sensor but the 3rd is 12296 for which i can find no reference. i have cleared the codes but this one remains.

the vehicle runs rough and when revved hard makes an unusual sound from the back of the engine around where the throttle body is located. I could really use a heads up on this one or a pointer in the right direction.

thanks
Chris